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Finding the Fourth Proportional to 840,731,200.30, 1,261,096,800.45 and 840,731,200.30

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Solution

The fourth proportional to 840,731,200.30, 1,261,096,800.45 and 840,731,200.30 is: 1,261,096,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,731,200.30 : 1,261,096,800.45 = 840,731,200.30 : x
  2. Step 2: Convert to fraction form
    840,731,200.30/1,261,096,800.45 = 840,731,200.30/x
  3. Step 3: Cross multiply
    840,731,200.30x = 1,261,096,800.45 × 840,731,200.30
  4. Step 4: Simplify right side
    840,731,200.30x = 1,060,243,426,736,818,048
  5. Step 5: Solve for x
    x = 1,060,243,426,736,818,048/840,731,200.30
  6. Step 6: Final answer
    x = 1,261,096,800.45

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.